1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * sysctl_net_llc.c: sysctl interface to LLC net subsystem. 4 * 5 * Arnaldo Carvalho de Melo <acme@conectiva.com.br> 6 */ 7 8 #include <linux/mm.h> 9 #include <linux/init.h> 10 #include <linux/sysctl.h> 11 #include <net/net_namespace.h> 12 #include <net/llc.h> 13 14 static struct ctl_table llc2_timeout_table[] = { 15 { 16 .procname = "ack", 17 .data = &sysctl_llc2_ack_timeout, 18 .maxlen = sizeof(sysctl_llc2_ack_timeout), 19 .mode = 0644, 20 .proc_handler = proc_dointvec_jiffies, 21 }, 22 { 23 .procname = "busy", 24 .data = &sysctl_llc2_busy_timeout, 25 .maxlen = sizeof(sysctl_llc2_busy_timeout), 26 .mode = 0644, 27 .proc_handler = proc_dointvec_jiffies, 28 }, 29 { 30 .procname = "p", 31 .data = &sysctl_llc2_p_timeout, 32 .maxlen = sizeof(sysctl_llc2_p_timeout), 33 .mode = 0644, 34 .proc_handler = proc_dointvec_jiffies, 35 }, 36 { 37 .procname = "rej", 38 .data = &sysctl_llc2_rej_timeout, 39 .maxlen = sizeof(sysctl_llc2_rej_timeout), 40 .mode = 0644, 41 .proc_handler = proc_dointvec_jiffies, 42 }, 43 }; 44 45 static struct ctl_table_header *llc2_timeout_header; 46 static struct ctl_table_header *llc_station_header; 47 48 int __init llc_sysctl_init(void) 49 { 50 struct ctl_table empty[1] = {}; 51 llc2_timeout_header = register_net_sysctl(&init_net, "net/llc/llc2/timeout", llc2_timeout_table); 52 llc_station_header = register_net_sysctl_sz(&init_net, "net/llc/station", empty, 0); 53 54 if (!llc2_timeout_header || !llc_station_header) { 55 llc_sysctl_exit(); 56 return -ENOMEM; 57 } 58 return 0; 59 } 60 61 void llc_sysctl_exit(void) 62 { 63 if (llc2_timeout_header) { 64 unregister_net_sysctl_table(llc2_timeout_header); 65 llc2_timeout_header = NULL; 66 } 67 if (llc_station_header) { 68 unregister_net_sysctl_table(llc_station_header); 69 llc_station_header = NULL; 70 } 71 } 72